Concept:In English, the stress of a word must be placed on the correct syllable. For this question, uppercase letters show the stressed syllable.
Explanation:The word "concessionaire" is divided into four syllables:
con-cess-ion-aire.
The primary stress falls on the final syllable, which is pronounced strongly as "-AIRE".
Therefore, among the given options, the correct stress mark is "con-cess-ion-AIRE".
The other options place stress on earlier syllables such as "CESS" or "CON", which are incorrect.
In standard pronunciation, the ending "-aire" receives the main emphasis.
Answer:Option B: con-cess-ion-AIRE.